Vascular occluder with inwardly insertable segment

Abstract

Disclosed are vascular occluder, kit and method of use thereof. The vascular occluder includes an occluder body extending longitudinally between an occluder body distal end and an occluder body proximal end. The occluder body is elastically compressible longitudinally from a preliminary deployed configuration to a compressed deployed configuration. Vascular occluder includes a tension member configured to tether the occluder body proximal end to the occluder body distal end and to tighten therebetween when the occluder body is in the compressed deployed configuration. The occluder body includes a proximal tubular body segment and a distal tubular body segment, and when in the compressed deployed configuration, the proximal tubular body segment is located inside of, and/or provides structural support to, the distal tubular body segment.

1 . A vascular occluder, comprising:
 an occluder body extending longitudinally between an occluder body distal end and an occluder body proximal end, the occluder body comprising a proximal tubular body segment and a distal tubular body segment, and wherein the occluder body is elastically compressible longitudinally from a preliminary deployed configuration to a compressed deployed configuration; and   a tension member configured to tether the occluder body proximal end to the occluder body distal end when the occluder body is in the compressed deployed configuration;   wherein, when the occluder body is in the compressed deployed configuration, the proximal tubular body segment is located inside of, and/or provides structural support to, the distal tubular body segment.   
     
     
         2 . The vascular occluder according to  claim 1 , comprising a proximal occluding section extending between the occluder body proximal end and the proximal tubular body segment, and/or a distal occluding section extending between the occluder body distal end and the distal tubular body segment, configured to cover and/or at least partially occlude most or all cross-sectional area of a passage, when the occluder body is in the compressed deployed configuration. 
     
     
         3 . The vascular occluder according to  claim 2 , wherein the proximal occluding section and/or the distal occluding section includes a meshed, braided and/or porous pattern and/or material across most or all area thereof, configured to reduce flow velocity, and/or to prevent localized increase of flow velocity, of blood passing therethrough, when the occluder body is in the compressed deployed configuration. 
     
     
         4 . (canceled) 
     
     
         5 . The vascular occluder according to  claim 1 , wherein, when the occluder body changes from the preliminary deployed configuration to the compressed deployed configuration, the proximal tubular body segment gradually and continuously becomes inserted into, and/or inwardly folded into, and/or tucked in, and/or stuffs, the distal tubular body segment, thereby forcing the distal tubular body segment to expand radially and/or to reshape elastically. 
     
     
         6 . (canceled) 
     
     
         7 . (canceled) 
     
     
         8 . (canceled) 
     
     
         9 . The vascular occluder according to  claim 1 , wherein the occluder body includes a portion between the occluder body proximal end and the distal tubular body segment comprising a crease and/or configured to facilitate a predetermined fold location and/or folding pattern when the proximal tubular body segment is pushed to advance towards the distal tubular body segment. 
     
     
         10 . The vascular occluder according to  claim 1 , wherein the proximal tubular body segment is greater in average diameter than the distal tubular body segment, when the occluder body is in the preliminary deployed configuration. 
     
     
         11 . The vascular occluder according to  claim 1 , wherein the proximal tubular body segment is greater in diameter than the distal tubular body segment along most or length thereof, when the occluder body is in the preliminary deployed configuration. 
     
     
         12 . The vascular occluder according to  claim 1 , wherein a proximal portion of the proximal tubular body segment when the occluder body is in the preliminary deployed configuration, is configured to engage a distal portion of the distal tubular body segment when the occluder body is in the compressed deployed configuration. 
     
     
         13 . The vascular occluder according to  claim 1 , wherein the occluder body reduces gradually in diameter in a direction from the occluder body proximal end to the occluder body distal end, when in the preliminary deployed configuration. 
     
     
         14 . The vascular occluder according to  claim 1 , wherein at least part of the occluder body is cone-like shaped when in the preliminary deployed configuration and is dome-like shaped when in the compressed deployed configuration. 
     
     
         15 . The vascular occluder according to  claim 1 , wherein the occluder body covers an entire length of the tension member when in the compressed deployed configuration. 
     
     
         16 . The vascular occluder according to  claim 1 , wherein the tension member is fixated with a tension member distal end thereof to the occluder body distal end. 
     
     
         17 . The vascular occluder according to  claim 1 , wherein the occluder body, when in the compressed deployed configuration, is configured to apply pressure to a wall portion enclosing a passage, thereby generating radial stress and/or friction sufficient for fixating the vascular occluder to the wall portion, wherein the passage is equal to or smaller in diameter than the occluder body when in the preliminary deployed configuration. 
     
     
         18 . The vascular occluder according to  claim 1 , wherein a resistance to radial inward compression of the occluder body when changing from the preliminary deployed configuration to the compressed deployed configuration is increased by at least 10%. 
     
     
         19 . (canceled) 
     
     
         20 . (canceled) 
     
     
         21 . (canceled) 
     
     
         22 . The vascular occluder according to  claim 19 , further comprising a puling member, wherein the pulling member includes a connection element at a distal end thereof configured to selectively connect to or disconnect from a mating connection element provided at a proximal end of the tension member. 
     
     
         23 . (canceled) 
     
     
         24 . (canceled) 
     
     
         25 . (canceled) 
     
     
         26 . The vascular occluder according to  claim 1 , comprising a proximal locking portion connected to and/or extending from the occluder body proximal end, configured to engage a portion of the occluder body or the tension member, when the occluder body is in the compressed deployed configuration, and to resist axial extension of the occluder body from the compressed deployed configuration. 
     
     
         27 . The vascular occluder according to  claim 26 , wherein the proximal locking portion includes an inner surface configured to engage one or more motion resisting discrete recesses or protuberances emerging from a surface of tension member, and/or to lock to the tension member by way of friction with an outer surface of the tension member, so as to resist and/or prevent axial motion of the proximal locking portion relative to the tension member. 
     
     
         28 . The vascular occluder according to  claim 1 , wherein the occluder body is elastically stretchable longitudinally into a delivery configuration having a delivery length and a delivery diameter, wherein the occluder body, when in the preliminary deployed configuration, has a preliminary deployed length smaller than the delivery length and a preliminary deployed diameter greater than the delivery diameter. 
     
     
         29 . (canceled) 
     
     
         30 . (canceled) 
     
     
         31 . (canceled) 
     
     
         32 . The vascular occluder according to  claim 1 , wherein the occluder body is at least partially meshed, woven and/or braided. 
     
     
         33 . The vascular occluder according to  claim 1 , wherein the occluder body is at least partially impermeable and/or is covered or impregnated with an impermeable or hydrophilic substance or material. 
     
     
         34 - 44 . (canceled)